685088253 has 16 divisors (see below), whose sum is σ = 1074648960. Its totient is φ = 429859008.

The previous prime is 685088249. The next prime is 685088267. The reversal of 685088253 is 352880586.

It is a happy number.

685088253 is a `hidden beast` number, since 68 + 508 + 82 + 5 + 3 = 666.

It is not a de Polignac number, because 685088253 - 2² = 685088249 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 685088199 and 685088208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685088203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 745825 + ... + 746742.

It is an arithmetic number, because the mean of its divisors is an integer number (67165560).

Almost surely, 2^685088253 is an apocalyptic number.

It is an amenable number.

685088253 is a deficient number, since it is larger than the sum of its proper divisors (389560707).

685088253 is a wasteful number, since it uses less digits than its factorization.

685088253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492593 (or 1492587 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The square root of 685088253 is about 26174.1905892045. The cubic root of 685088253 is about 881.5538374672.

The spelling of 685088253 in words is "six hundred eighty-five million, eighty-eight thousand, two hundred fifty-three".